Sewing machine and omni-sealed thread-taking-up mechanism thereof

Abstract

The invention discloses a sewing machine and an omni-sealed thread-taking-up mechanism thereof. The omni-sealed thread-taking-up mechanism comprises an omni-sealed transmission box, a passive transmission shaft and a thread-taking-up bar which are arranged in a housing of the sewing machine, wherein the passive transmission shaft penetrates in the right side wall of the transmission box; a cam isfixedly arranged at the left end of the passive transmission shaft; a cam slot is arranged on the left end surface of the cam; the lower end of the thread-taking-up bar is hinged on the right side wall of the transmission box; the upper end of the thread-taking-up bar is provided with a threading hole and penetrates out of the upper wall of the transmission box and the upper wall of the housing; the middle part of the thread-taking-up bar is provided with a pin roller; and the pin roller is placed in the cam slot and drives the upper end of the thread-taking-up bar to swing forwards and backwards along with the rotation of the cam. In the omni-sealed thread-taking-up mechanism of the sewing machine, provided by the invention, both the lower part of the thread-taking-up bar and a driving mechanism of the thread-taking-up bar are sealed in the omni-sealed transmission box; the omni-sealed transmission box is filled with machine oil; and therefore, when the sewing machine works, the noise is reduced, the dust cannot fall into the machine oil and the abrasion between the cam and the thread-taking-up bar is reduced.

Description

technical field [0001] The invention relates to a sewing machine, in particular to a sewing machine and a fully sealed thread take-up mechanism thereof. Background technique [0002] In the thread take-up mechanism of traditional sewing machines, the cam, thread take-up lever and other components are exposed outside the transmission box of the casing. With this structure, the sewing machine is noisy when it is working, and the wear rate is fast. It is necessary to manually adjust the cam and thread take-up lever Add lubricating oil to the connection or lubricate through the oil line. However, in the process of adding lubricating oil, it is easy to cause the lubricating oil to leak out and pollute the sewing materials, which also increases the maintenance cost. In addition, since modern sewing machines are generally mechatronic products, they have high requirements on the working environment. Once oil leaks, the electronic components will work unstable and cause machine fail...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to solve the problems that the thread take-up mechanism of the sewing machine is noisy, the sewing materials are easily polluted when lubricating oil is added, and the machine is prone to failure.

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